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Internal ports and jumpers
6 - English
A26361-K522-Z120-2-7419
Internal ports and jumpers
i
The blackened pin of a jumper or a connector represents pin 1
JP1 - Ring-in Signal
jumper
Setting
Function
JP1
connected to 1 - 2
connected to 2 - 3*
Ring-in Signal
Ring-in Active Low
Ring-in Active High
* = Default setting
JP3 - Selecting the processor core voltage Vcore
Vcore
Jumper JP3
Vcore
Jumper JP3
3.3V
connected to 1 - 2
2.8V
connected to 7 - 8
3.2V
connected to 3 - 4
2.2V
connected to 9 - 10
2.9V
connected to 5 - 6
1.8V
connected to 11 - 12